About: http://webisa.webdatacommons.org/383595901

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The case 14 is graphite, but other rigid or semi-rigid materials may be used, such as metals, plastics and combinations thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com